污染物
吸附
室内空气质量
吸附
水分
化学工程
相对湿度
湿度
化学
环境科学
环境化学
有机化学
环境工程
热力学
物理
工程类
作者
Neng‐Xiu Zhu,Zhang‐Wen Wei,Cheng‐Xia Chen,Xianqing Xiong,Yi Xiong,Zheng Zeng,Wei Wang,Ji‐Jun Jiang,Fan Ye,Cheng‐Yong Su
标识
DOI:10.1002/anie.202112097
摘要
The indoor air quality is of prime importance for human daily life and health, for which the adsorbents like zeolites and silica-gels are widely used for air dehumidification and harmful gases capture. Herein, we develop a pore-nanospace post-engineering strategy to optimize the hydrophilicity, water-uptake capacity and air-purifying ability of metal-organic frameworks (MOFs) with long-term stability, offering an ideal candidate with autonomous multi-functionality of moisture control and pollutants sequestration. Through variant tuning of organic-linkers carrying hydrophobic and hydrophilic groups in the pore-nanospaces of prototypical UiO-67, a moderately hydrophilic MOF (UiO-67-4Me-NH2 -38 %) with high thermal, hydrolytic and acid-base stability is screened out, featuring S-shaped water sorption isotherms exactly located in the recommended comfortable and healthy ranges of relative humidity for indoor ventilation (45 %-65 % RH) and adverse health effects minimization (40-60 % RH). Its exceptional attributes of water-uptake working capacity/efficiency, contaminants removal, recyclability and regeneration promise a great potential in confined indoor environment application.
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